How to achieve discoloration effect on mouse hover in javascript

Javascript method to implement mouseover discoloration: 1. Bind the element to the onmouseover event and set the event processing function; 2. In the event processing function, use "element object.style.color attribute name="color The value ";" statement sets the effect of the element's color change when a hover event is triggered.

The operating environment of this tutorial: windows7 system, javascript version 1.8.5, Dell G3 computer.

Idea: For upper-level elements and parent elements, lower-level elements and child elements can change color. Just :hover and css selectors are all it takes. Subordinate elements operate on superior elements by using the onmouseover and onmouseout events in JavaScript

• The onmouseover event occurs when the mouse pointer moves to the specified element.

• The onmouseout event occurs when the mouse pointer moves out of the specified object.

1. HTML code

 
 
 鼠标移动到 A div 时，我要变色 
 
 
 
 
 一号 div 
 
 二号 div 
 
 

2. JavaScript code

Note: It is recommended to write it before the closing tag of the body

3. CSS code

4. Rendering

javascript learning tutorial】

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